Uncovering diversity and abundance patterns of CO₂-fixing microorganisms in peatlands.

ABSTRACT: Microorganisms play a crucial role in the carbon (C) dynamics of peatlands - a major terrestrial C reservoir. Because of their role in C emissions, heterotrophic microorganisms have attracted much attention over the past decades. CO₂-fixing microorganisms (CFMs) remained largely overlooked, while they could attenuate C emissions. Here, we use metabarcoding and digital droplet PCR to survey microorganisms that potentially fix CO₂ in different peatlands. We demonstrate that CFMs are abundant and diverse in peatlands, with on average 1021 CFMs contributing up to 40% of the total bacterial abundance. Using a joint-species distribution model, we identified a core and a specific CFM microbiome, the latter being influenced by temperature and nutrients. Our findings highlight

SUBMITTER: Le Geay M 

PROVIDER: S-EPMC12322008 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature